SDL: fix keyboard handling for non-us map

Author: chrisws

src/platform/sdl/keymap.h

@@ -19,6 +19,7 @@ const int keymap[][2] = {
   {SDLK_KP_MINUS, SB_KEY_KP_MINUS},
   {SDLK_KP_PLUS, SB_KEY_KP_PLUS},
   {SDLK_KP_EQUALS, '='},
+  {SDLK_TAB, SB_KEY_TAB},
   {SDLK_BACKSPACE, SB_KEY_BACKSPACE},
   {SDLK_DELETE, SB_KEY_DELETE},
   {SDLK_UP, SB_KEY_UP},

src/ui/textedit.cpp

@@ -64,9 +64,9 @@ const int theme3[] = {
 };
 
 const int theme4[] = {
-  0x222228, 0x222228, 0xa7aebc, 0x484f5f, 0xa7aebc, 0x00bb00,
-  0xf4f9f4, 0xe1e1e1, 0xefeff0, 0x1f51eb, 0x000000, 0xebedef,
-  0x0083f8, 0xff9d00, 0x0000ff, 0xc679dd, 0x0083f8, 0
+  0x4f4a44, 0x222228, 0x77839b, 0x484f5f, 0xa7aebc, 0x5f9e59,
+  0xcdc0b0, 0xe1e1e1, 0xefeff0, 0x1f51eb, 0x000000, 0xcbb8a2,
+  0x4c9f9a, 0xaf5fd6, 0x0000ff, 0xc679dd, 0x0083f8, 0
 };
 
 int g_user_theme[] = {
@@ -130,10 +130,6 @@ int compareIntegers(const void *p1, const void *p2) {
   return i1 < i2 ? -1 : i1 == i2 ? 0 : 1;
 }
 
-void init_edit_markers() {
-
-}
-
 //
 // EditTheme
 //